It's no surprise that Juan Pierre has made the Phillies roster out of Spring Training this year. Pierre has been in the league for 12 years now, this is his 13th MLB season with the Phillies. Pierre burst onto the scene in 2000, and he finished 6th for Rookie of the Year in that season.
What Pierre brings to the team is some of what the Phillies have been lacking. Speed.
Pierre may have slowed down a bit, with last year being the fewest bases (27) that he's stolen in his career, and having been caught stealing in 17 other attempts doesn't help too much either. Pierre is still quick though and if he plays regularly, he should add another 30-50 stolen bases to his career total.
Pierre also brings a career batting average of .296 to the Phillies, that is not bad at all given the fact that he is about to enter his 13th season of play. According to Baseball-Reference, Pierre sits at number 24 on the list of all active Major League players for the best batting average with a minimum of 3000 plate appearances.